4.6 Article

Fatigue Effect on Minimal Toe Clearance and Toe Activity during Walking

Journal

SENSORS
Volume 22, Issue 23, Pages -

Publisher

MDPI
DOI: 10.3390/s22239300

Keywords

gait; fatigue; forefoot activity; minimal toe clearance

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This study investigates the effects of fatigue on the walking process in young adults using a developed clog-integrated sensor system. The results show that the forefoot activity and minimum toe clearance of participants change under fatigue conditions.
This study investigates the effects of fatigue on the process of walking in young adults using the developed clog-integrated sensor system. The developed sensor can simultaneously measure the forefoot activity (FA) and minimum toe clearance (MTC). The FA was evaluated through the change in the contact area captured by a camera using a method based on a light conductive plate. The MTC was derived from the distance between the bottom surface of the clog and ground obtained using a time of flight (TOF) sensor, and the clog posture was obtained using an acceleration sensor. The induced fatigue was achieved by walking on a treadmill at the fastest walking speed. We evaluated the FA and MTC before and after fatigue in both feet for 14 participants. The effects of fatigue manifested in either the FA or MTC of either foot when the results were evaluated by considering the participants individually, although individual variances in the effects of fatigue were observed. In the dominant foot, a significant increase in either the FA or MTC was observed in 13 of the 14 participants. The mean MTC in the dominant foot increased significantly (p = 0.038) when the results were evaluated by considering the participants as a group.

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